INFLUENCE OF EARTH''S CURVATURE ON CALCULATION OF IONOSPHERE REFLECTION AT LF AND VLF BANDS
关于地球曲率对低频电波电离层反射系数计算的影响

The influence of the earth's curvature on calculation of ionosphere reflection coefficients at LF and VLF bands is discussed. By developping Maxwell equations in the spherical coordinate, a differential equation system for transverse components of electromagnetic waves has been achieved. The value of admittance matrix A at the bottom of ionosphere is able to be countted with the similar method given by Budden.Then the ionosphere reflection coefficients is able to be countted with the spherical stratified model.